PHP :: Request #6787 :: read_exif_data returns data even without real exif date

Request #6787	read_exif_data returns data even without real exif date
Submitted:	2000-09-17 06:07 UTC	Modified:	2002-04-01 19:32 UTC
From:	serge at globalbeach dot com	Assigned:
Status:	Closed	Package:	Feature/Change Request
PHP Version:	4.0.2	OS:	RH Linux 6.2
Private report:	No	CVE-ID:	None

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[2000-09-17 06:07 UTC] serge at globalbeach dot com

Hi Guys,

It seems that read_exif_data builds certain fields like
FileName, FileDateTime, FileSize etc .. even when no real
EXIF data exists. So read_exif_data will always return something....!

This makes it a pain to test for the presence of actual EXIF data cause I have to do something like this:

$exif_data = @read_exif_data($upload);
if (isset ($exif_data['CameraMake'])) { 

Not very bullet proof ....

Would be nice if it would not return anything without the presence of actual EXIF data.

Thanks, Serge

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[2000-09-17 07:20 UTC] rasmus@php.net

That's because some of this information is derived and not picked out of the exif header.  Check a common one like DateTime to see if there might be real exif data in the jpeg.

I suppose an extra entry could be added that would be set to true if any exif data is found so I have moved this to a feature request.

[2002-04-01 19:32 UTC] sniper@php.net

AFAIK, this is fixed in CVS.
Try latest CVS snapshot from http://snaps.php.net/

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